def get_frequent_renter_points
movie.get_frequent_renter_points days_rented
end
end

MockExpectationError in ‘A new rental should have a movie and rental
length’
Mock ‘Movie’ received unexpected message ‘to_s’ with []
./specs/rental_spec.rb:10:in `should have a movie and rental length’

So when I’m calling @rental.movie.should_equal@movie, it’s blowing
up. I have no clue what’s going on. After doing some googling and
looking at the source, all I know is that to_s is undefined on my mock
object - I don’t know why it’s being called though.